Here's where it gets better. I don't just hand them a gift card - I have to craft around it to make it feel special. (I realize the "special" is for me - remember, my boys are the ones to whom I could hand cash.) I've kept my eyes open over the years for products to display gift cards. Some companies have pockets or tabs, etc. Taylored Expressions has a fun series of dies and products for gift card tins. They sell the tins, tin toppers, inserts, etc. (all linked below).
Here's what I came up with. (NOTE: I temporarily adhered the top to a second tin just for the photo - this will just be one tin.)